Getting erratic cuts on your
straightline ripsaw? Here are two
possible reasons why.
1Your material is cut in an irregular manner, with the stock “snaking”
through the machine. Probable
causes: ( 1) The material is not
held tightly. ( 2) The material is
being pushed. Solutions: ( 1)
Check the pressure bar height
and set the yield to 1/8 inch;
check the pressure rolls for play;
check the tops of the feed chain
for wear – there should be less
than 0.040 inch flat on top of the
pyramid; make sure the pressure
bar is level and parallel to the
feed chains. ( 2) Check for slivers
in the machine and/or check all
the pressure rolls for turning.
2There’s a rough cut on the stock. Prob- able causes: ( 1) The saw
Solving erratic cuts on the ripsaw
blades are not running true. ( 2)
The blade is moving or being
deflected. Solutions: ( 1) Check
the blade for high teeth – chang-
ing the saw blade should change
the cut; check for nicks in the saw
collars; check the inner saw collar
with a dial indicator, a 0.003 inch
maximum runout is recommend-
ed; check the outer saw collar for
dish – there should be 0.005-inch
dish in the center of the collar.
( 2) Check the kerf of the saw
blade – a 3/16-inch kerf is recom-
mended; check for end play on
the inner saw collar – the inner
saw collar should not move in or
out more than 0.001 inch.
Source: Diehl Machines. For information
call 260-563-2102 or visit Diehl Machines.com.